Heat cycle system and heat cycle method using the same

Abstract

There are provided a heat cycle system that uses a system for heat cycle designed to use 1,1,1,3,3-pentafluoropropane (HFC-245fa) as a working fluid as it is and is thereby excellent in economic efficiency, and is equal to or higher in cycle performance and lower in environmental burden than in the case of using HFC-245fa, and a heat cycle method using the heat cycle system. The heat cycle system includes a working fluid and a system for heat cycle, the system for heat cycle is suitable for HFC-245fa being used as a working fluid, and the working fluid contains 1-chloro-2,3,3,3-tetrafluoropropene, and the heat cycle method uses the heat cycle system.

What is claimed is: 
     
         1 . A heat cycle system comprising a working fluid and a system for heat cycle, wherein
 the system for heat cycle is suitable for 1,1,1,3,3-pentafluoropropane being used as a working fluid, and   the working fluid contains 1-chloro-2,3,3,3-tetrafluoropropene   
     
     
         2 . The heat cycle system according to  claim 1 , wherein
 a ratio of 1-chloro-2,3,3,3-tetrafluoropropene to the working fluid is 40 to 100 mass %.   
     
     
         3 . The heat cycle system according to  claim 1 , wherein
 the working fluid consists of 1-chloro-2,3,3,3-tetrafluoropropene.   
     
     
         4 . The heat cycle system according to  claim 1 , wherein
 a ratio of (Z)-1-chloro-2,3,3,3-tetrafluoropropene and (E)-1-chloro-2,3,3,3-tetrafluoropropene in the 1-chloro-2,3,3,3-tetrafluoropropene is 50:50 to 100:0 by mass ratio represented by (Z)-1-chloro-2,3,3,3-tetrafluoropropene: (E)-1-chloro-2,3,3,3-tetrafluoropropene.   
     
     
         5 . The heat cycle system according to  claim 4 , wherein
 the 1-chloro-2,3,3,3-tetrafluoropropene consists of (Z)-1-chloro-2,3,3,3-tetrafluoropropene.   
     
     
         6 . The heat cycle system according to  claim 1 , wherein
 the heat cycle system is a refrigerating apparatus, an air-conditioning apparatus, a power generating system, a heat transport apparatus, or a secondary cooling machine.   
     
     
         7 . The heat cycle system according to  claim 1 , wherein
 the heat cycle system is a centrifugal refrigerator.   
     
     
         8 . The heat cycle system according to  claim 1 , wherein
 the heat cycle system is a low-pressure centrifugal refrigerator.   
     
     
         9 . A heat cycle method using the heat cycle system according to  claim 1 .